Dust-collector for drills.



- F. F. RIGRGS.

DUST COLLECTDR FOR DRILLS.

- APPLICATION FILED 1AN.8,1916.

Patented May 2,1916.

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FRAnKr. nicos, or LEAD, sonfrni DAKOTA.

DUST-COLLECTOR :FOR DRILLS.

Specification of Letters Patent.

Patented May 2, 1916,

Application filed January 8, 1916. Serial No. 71,029.

To all whom t may concern Be it known that I, FRANK F. Rises, a citizenof the United States, residing at Lead, in the county of Lawrence and.State of South Dakota, have invented certain new and usefulimprovements in Dust-Collectors for Drills, of which the following is aspecification. Y

This invention relates to devices employed for collecting the dust andlike particles of material'which arise from the working of drills, moreparticularly of pneumatic drills, and has for one of its objects tosimplify and improve the construction and increase the efliciency andutility of devices of this character.

Another object of the invention is to provide a device of this characterwhich may be applied without material structural change to drills andlike devices of various sizes and employed for various purposes.

The improved device is more particularly applicable to drills employedin sto-ne quarries and the like, and likewise employed in dressing andworking building stone and for like purposes where the operation of thedrill produces quantities of fine dust or pulverized material which isliable to annoy or injure the workmen, and for the purpose ofillustration the improved device is shown applied to a conventionalpneumatic drill, but it is to be understood that it is not desired tolimit-the invention in any particular in this respect. y

In the drawings employed for illustrating the preferred embodiment ofthe invention Figure 1 is a side elevation of a conventional pneumaticdrill with the improvement ap-` plied; Fig. 2 is an enlarged plan viewwith the top removed and with the drill stock in section on the line 2 2of Fig. 1; Fig. 3 is a section on the line 3 3 of Fig. 2 with the coverin place thereon; Fig. 4l is a section on the line H ofFig. 2 with thecover in place thereon.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawings by the samereference characters.

rfhe improved device comprises a hollow body 10, preferably cylindricaland with op positely disposed lateral lugs 11 having threaded aperturesand arranged to receive corresponding lateral lugs 12 projecting from atop or closure 13 for the body. The` lugs 12 are perforated to receiveclamp screws 111 which enter the threaded apertures of the lugs 11 andthus secure the clo sure 13 in place. The closure 18 is provided with acentral aperture 15 through which the stock 16 of the drill operates.The bottom of the body 10 is annular, or with a relatively large opening18, so that a considerable space is left between the stock 16 and thewalls of the opening 18 for the free passage of the dust and likematter. The body 10 is formed with a channel 19 which slopes constantlydownwardly toward one side and merges into a pocket or recess 2G at thelowest point of the channel. The bottom of the recess is preferablylocated a considerable distance below the lower line of the lowest pointof the channel, and communicating wlth the recess 2O is a lateraldischarge passage 21 leading outwardly from the body. Any suitableconductor may be attached to the outlet 21, but as this conductor formsno part of the present invention it is not deemed necessary toillustrate the same. The bottom of the body is designed to rest upon thestone or other material through which the drill is operating andindicated conventionally at 22, and a rubber or other packing 23 may beemployed betweenv the body 10 and the rock or other material 22 toprevent thelescape of dust between the body and the roc r.

A packing washer 24 of leather orlike inaterial may be placed upon thetop 13 and surrounding the drill rod 16, and held in place by an annularholding member or washer 25, the latter being secured by clamp bolts orlike devices 26.

|The improved device is simple in construction, can be inexpensivelymanufactured, preferably of cast metal, and may be readily applied todrill stocks of various sizes by slight and unimportant modifications ofthe opening 15 of the cover 18.

Having thus described the invention, what is claimed as new is 1. In adevice of the class described, a hollow body having a lateral discharge,a top having an aperture to receive a drill stock, and a bottom havingan opening, said bottom having a channel surrounding its opening andconstantly sloping toward the discharge and communicating therewith andsaid discharge located below the line of the channeh 2.y ln a device ofthe class described, a hollow body includingatop and a bottom, the

vbottom having an opening having a 'channel surrounding the opening andsloping con- Vstantly to oneside and a recess into which FRANK F. Ricos.[L 5.]

Gopie's of this patent may be obtained for five cents each, byaddressing the Commissioner of Patents.

v Washington, D. C.

